Andrew wightman



(No Model.) A. WIGHTMAN.

METALLIC ROOFING.

No. 349,966. Patented Sept. 28, 1886. Ifi- UNITED STATES PATENT OFFICE.

ANDRFEV \VIG-HTMAN, OF PEEKSKILL, NE\V YORK.

METALLIC ROOFiNG.

SPECIPICATION forming part of Letters Patent No. 349,966, dated September 28, 1886.

Application filed Jnnc8,188fi. Serial No.2o4,505. (No model.)

To (1. whom it may concern:

Be it known that I, ANDREW WIGHTMAX, of Peekskill, in the county of XVestchester and State of New York, have invented certain new and useful Improvements in Metallic Roofing; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the aeconr panying drawings, which form part of this specification.

My invention relates to an improvement in metallic roofing; and it consists in the combination of a series of plates which have their two upper edges turned over upon the top of the plate, so as to form narrow folds, while their two lower edges are turned over upon the under side of the plate so as to form wider folds than those upon the top, and which plate has its lower corner out very slightly away, the upper edges of the lower folds being made to project beyond the corners of the plate, so as to project up .into the corners of the other plates, and tlms form atight joint, as will be more fully described hereinafter.

The object of myinvention is to provide metallic rooting-plates in which the top folds are less than the bottom ones, so as to do away with the round notch heretofore used, and to make the adjoining corners sufficiently tight to prevent water beating under the corners, even upon a very flat roof.

Figure 1 is a plan View of a section of roofing embodying my invention. Figs. 2 and 3 are perspectives of one of the plates taken from opposite sides. Fig. 4 is a section taken on the line 0 c of Fig. 1. Fig. 5 is a section taken on the lines a a.

A represents the plates out of which the root is formed, each one of which has the two narrow sides B formed along the upper edges. The ends of these two plates approach each other very closely at their side corners, so as to leave but a very narrow space between them; but it'so desired these folds may be made slightly to overlap each other, and thus form a tight joint at this point. Upon thennder side, along the two lower edges, are formed the two folds G, which are wider than the folds B, and which foldsG have their ends to project beyond the two corners of the plate, as shown. These projecting ends D extend up into the corners formed by the meeting of the two narrow folds Bat their upper ends, and thus serve to assist in forming a. tight joint at this poi nt'to prevent the beating of rain under the plates. The folds overlap each other or not, as may be desired, at their lower ends, and then this lower corner, F, of the plate, after the plate has been secured in position, is mashed down so as to cover over the corner that is formed by the meeting of the three plates just below it. This cover being mashed down serves as a guard toprevent the beating of rain under the plates, even upon very flat roofs. The wide folds on the under sides of the plates catch under the narrow folds made upon the tops of the plates in the usual manner. By

making the upper folds narrower than the.

lower ones enables a comparatively larger plate to be formed from the same-sized piece of tin than is done where bot-h folds are made wide in the usual manner. Each plate is fastened in position in the usual manner by means of a nail at its upper corner after the lower folds of one plate have been made to catch under the upper folds of the two plates which are just below it, and which have already been secured in position. The construction here shown enables especially good water-tight joints to be made at the corners of the plates where they are joined together.

I am aware that roofing-plates have heretofore been made in which the plates ha've folds or bends of uniform width upon both sides, and the folds form projecting corners, and this disclaim. My invention differs from this in having the folds of different widths, forming projections at two corners only, and in bending down the lower corners of the plates so as to prevent the water from being blown under them.

Having thus described my invention, I claim- A metal roofing-plate having the narrow folds B upon its top and the wider folds C upon its under side, and the projecting corners I), which catch under the corner formed by the meeting of the narrower folds, B, and which plate has its lower corner, F, bent downward, substantially as shown and described.

In testimony whereof I afiix my signature in presence of two witnesses.

\Vitnesses: ANDRE\V \VIG HTM AN.

.TOIIN SMITH, Jr., SAN noun ll. KNAPP. 

